61605032751 has 24 divisors (see below), whose sum is σ = 92007112704. Its totient is φ = 39679595280.

The previous prime is 61605032747. The next prime is 61605032759. The reversal of 61605032751 is 15723050616.

61605032751 is a `hidden beast` number, since 616 + 0 + 5 + 0 + 32 + 7 + 5 + 1 = 666.

It is not a de Polignac number, because 61605032751 - 2² = 61605032747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61605032759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12531 + ... + 351236.

It is an arithmetic number, because the mean of its divisors is an integer number (3833629696).

Almost surely, 2^61605032751 is an apocalyptic number.

61605032751 is a deficient number, since it is larger than the sum of its proper divisors (30402079953).

61605032751 is a wasteful number, since it uses less digits than its factorization.

61605032751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364411 (or 364408 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 61605032751 in words is "sixty-one billion, six hundred five million, thirty-two thousand, seven hundred fifty-one".