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60484978661 = 37244181869
BaseRepresentation
bin111000010101001011…
…111000011111100101
312210010022011021101212
4320111023320133211
51442333123304121
643441511001205
74240605556442
oct702513703745
9183108137355
1060484978661
1123719214778
12b880369205
13591c083003
142cdb0589c9
15189010025b
hexe152f87e5

60484978661 has 6 divisors (see below), whose sum is σ = 62163891090. Its totient is φ = 58850248176.

The previous prime is 60484978627. The next prime is 60484978679. The reversal of 60484978661 is 16687948406.

It can be written as a sum of positive squares in 3 ways, for example, as 29823217636 + 30661761025 = 172694^2 + 175105^2 .

It is a de Polignac number, because none of the positive numbers 2k-60484978661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 60484978661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60484978601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22089566 + ... + 22092303.

It is an arithmetic number, because the mean of its divisors is an integer number (10360648515).

Almost surely, 260484978661 is an apocalyptic number.

It is an amenable number.

60484978661 is a deficient number, since it is larger than the sum of its proper divisors (1678912429).

60484978661 is an equidigital number, since it uses as much as digits as its factorization.

60484978661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44181943 (or 44181906 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 60484978661 in words is "sixty billion, four hundred eighty-four million, nine hundred seventy-eight thousand, six hundred sixty-one".

Divisors: 1 37 1369 44181869 1634729153 60484978661