61222507884 has 48 divisors (see below), whose sum is σ = 159418207200. Its totient is φ = 20318378688.

The previous prime is 61222507877. The next prime is 61222507963. The reversal of 61222507884 is 48870522216.

61222507884 is a `hidden beast` number, since 61 + 2 + 2 + 2 + 507 + 8 + 84 = 666.

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, 1212987 + ... + 1262450.

It is an arithmetic number, because the mean of its divisors is an integer number (3321212650).

Almost surely, 2^61222507884 is an apocalyptic number.

It is an amenable number.

61222507884 is an abundant number, since it is smaller than the sum of its proper divisors (98195699316).

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

61222507884 is a wasteful number, since it uses less digits than its factorization.

61222507884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475679 (or 2475671 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 61222507884 in words is "sixty-one billion, two hundred twenty-two million, five hundred seven thousand, eight hundred eighty-four".