61642033525 has 12 divisors (see below), whose sum is σ = 76778891392. Its totient is φ = 49092485040.

The previous prime is 61642033493. The next prime is 61642033543. The reversal of 61642033525 is 52533024616.

It is not a de Polignac number, because 61642033525 - 2⁵ = 61642033493 is a prime.

It is a Duffinian number.

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, 5522859 + ... + 5534008.

Almost surely, 2^61642033525 is an apocalyptic number.

It is an amenable number.

61642033525 is a deficient number, since it is larger than the sum of its proper divisors (15136857867).

61642033525 is a wasteful number, since it uses less digits than its factorization.

61642033525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11057100 (or 11057095 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 61642033525 in words is "sixty-one billion, six hundred forty-two million, thirty-three thousand, five hundred twenty-five".