61024487775 has 24 divisors (see below), whose sum is σ = 101148009744. Its totient is φ = 32464396800.

The previous prime is 61024487747. The next prime is 61024487893. The reversal of 61024487775 is 57778442016.

It is not a de Polignac number, because 61024487775 - 2⁸ = 61024487519 is a prime.

It is a super-2 number, since 2×61024487775² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 994986 + ... + 1054535.

It is an arithmetic number, because the mean of its divisors is an integer number (4214500406).

Almost surely, 2^61024487775 is an apocalyptic number.

61024487775 is a deficient number, since it is larger than the sum of its proper divisors (40123521969).

61024487775 is a wasteful number, since it uses less digits than its factorization.

61024487775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049931 (or 2049926 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 61024487775 in words is "sixty-one billion, twenty-four million, four hundred eighty-seven thousand, seven hundred seventy-five".