61543504152 has 144 divisors (see below), whose sum is σ = 181226703840. Its totient is φ = 18756220032.

The previous prime is 61543504129. The next prime is 61543504177. The reversal of 61543504152 is 25140534516.

61543504152 is a `hidden beast` number, since 6 + 154 + 350 + 4 + 152 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10713393 + ... + 10719135.

Almost surely, 2^61543504152 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 61543504152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90613351920).

61543504152 is an abundant number, since it is smaller than the sum of its proper divisors (119683199688).

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

61543504152 is a wasteful number, since it uses less digits than its factorization.

61543504152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982 (or 5868 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 61543504152 in words is "sixty-one billion, five hundred forty-three million, five hundred four thousand, one hundred fifty-two".