59961087557 has 4 divisors (see below), whose sum is σ = 68526957216. Its totient is φ = 51395217900.

The previous prime is 59961087539. The next prime is 59961087559. The reversal of 59961087557 is 75578016995.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 59961087557 - 2⁸ = 59961087301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 59961087557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (59961087559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4282934819 + ... + 4282934832.

It is an arithmetic number, because the mean of its divisors is an integer number (17131739304).

Almost surely, 2^59961087557 is an apocalyptic number.

It is an amenable number.

59961087557 is a deficient number, since it is larger than the sum of its proper divisors (8565869659).

59961087557 is an equidigital number, since it uses as much as digits as its factorization.

59961087557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8565869658.

The product of its (nonzero) digits is 23814000, while the sum is 62.

The spelling of 59961087557 in words is "fifty-nine billion, nine hundred sixty-one million, eighty-seven thousand, five hundred fifty-seven".