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61353066031 = 7911319135983
BaseRepresentation
bin111001001000111011…
…010111111000101111
312212100210121200101221
4321020323113320233
52001122341103111
644104001044211
74301246312425
oct711073277057
9185323550357
1061353066031
112402422a654
12ba83026667
135a29b84c8a
142d80469115
1518e1426371
hexe48ed7e2f

61353066031 has 16 divisors (see below), whose sum is σ = 63009423360. Its totient is φ = 59724362880.

The previous prime is 61353066029. The next prime is 61353066067. The reversal of 61353066031 is 13066035316.

It is a cyclic number.

It is not a de Polignac number, because 61353066031 - 21 = 61353066029 is a prime.

It is a super-2 number, since 2×613530660312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61353066091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1687066 + ... + 1723048.

It is an arithmetic number, because the mean of its divisors is an integer number (3938088960).

Almost surely, 261353066031 is an apocalyptic number.

61353066031 is a deficient number, since it is larger than the sum of its proper divisors (1656357329).

61353066031 is a wasteful number, since it uses less digits than its factorization.

61353066031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36366.

The product of its (nonzero) digits is 29160, while the sum is 34.

The spelling of 61353066031 in words is "sixty-one billion, three hundred fifty-three million, sixty-six thousand, thirty-one".

Divisors: 1 79 113 191 8927 15089 21583 35983 1705057 2842657 4066079 6872753 321220241 542947487 776621089 61353066031