61651526256 has 60 divisors (see below), whose sum is σ = 182687985792. Its totient is φ = 19341654528.

The previous prime is 61651526191. The next prime is 61651526263. The reversal of 61651526256 is 65262515616.

61651526256 is a `hidden beast` number, since 6 + 1 + 6 + 5 + 15 + 2 + 625 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12589776 + ... + 12594671.

Almost surely, 2^61651526256 is an apocalyptic number.

It is an amenable number.

61651526256 is an abundant number, since it is smaller than the sum of its proper divisors (121036459536).

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

61651526256 is a wasteful number, since it uses less digits than its factorization.

61651526256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25184478 (or 25184469 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 61651526256 in words is "sixty-one billion, six hundred fifty-one million, five hundred twenty-six thousand, two hundred fifty-six".