61024861272 has 128 divisors (see below), whose sum is σ = 158984939520. Its totient is φ = 19498752000.

The previous prime is 61024861267. The next prime is 61024861361. The reversal of 61024861272 is 27216842016.

It is a self number, because there is not a number n which added to its sum of digits gives 61024861272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37832338 + ... + 37833950.

It is an arithmetic number, because the mean of its divisors is an integer number (1242069840).

Almost surely, 2^61024861272 is an apocalyptic number.

61024861272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61024861272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79492469760).

61024861272 is an abundant number, since it is smaller than the sum of its proper divisors (97960078248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61024861272 is a wasteful number, since it uses less digits than its factorization.

61024861272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 61024861272 in words is "sixty-one billion, twenty-four million, eight hundred sixty-one thousand, two hundred seventy-two".