61895581404 has 48 divisors (see below), whose sum is σ = 146629639968. Its totient is φ = 20318957568.

The previous prime is 61895581393. The next prime is 61895581453. The reversal of 61895581404 is 40418559816.

It is a happy number.

It is a super-2 number, since 2×61895581404² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67524 + ... + 358260.

It is an arithmetic number, because the mean of its divisors is an integer number (3054784166).

Almost surely, 2^61895581404 is an apocalyptic number.

It is an amenable number.

61895581404 is an abundant number, since it is smaller than the sum of its proper divisors (84734058564).

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

61895581404 is a wasteful number, since it uses less digits than its factorization.

61895581404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291014 (or 291012 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 61895581404 in words is "sixty-one billion, eight hundred ninety-five million, five hundred eighty-one thousand, four hundred four".