61634093554 has 48 divisors (see below), whose sum is σ = 106192477440. Its totient is φ = 26758424000.

The previous prime is 61634093539. The next prime is 61634093561. The reversal of 61634093554 is 45539043616.

It is a super-2 number, since 2×61634093554² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 3994254 + ... + 4009654.

It is an arithmetic number, because the mean of its divisors is an integer number (2212343280).

Almost surely, 2^61634093554 is an apocalyptic number.

61634093554 is a deficient number, since it is larger than the sum of its proper divisors (44558383886).

61634093554 is a wasteful number, since it uses less digits than its factorization.

61634093554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16167 (or 16156 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 61634093554 in words is "sixty-one billion, six hundred thirty-four million, ninety-three thousand, five hundred fifty-four".