61058031156 has 72 divisors (see below), whose sum is σ = 158011308000. Its totient is φ = 19873333440.

The previous prime is 61058031143. The next prime is 61058031187. The reversal of 61058031156 is 65113085016.

61058031156 is a `hidden beast` number, since 6 + 10 + 580 + 3 + 11 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61058031156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220011 + ... + 412941.

It is an arithmetic number, because the mean of its divisors is an integer number (2194601500).

Almost surely, 2^61058031156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61058031156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79005654000).

61058031156 is an abundant number, since it is smaller than the sum of its proper divisors (96953276844).

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

61058031156 is a wasteful number, since it uses less digits than its factorization.

61058031156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193149 (or 193144 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 61058031156 in words is "sixty-one billion, fifty-eight million, thirty-one thousand, one hundred fifty-six".