61456358898 has 48 divisors (see below), whose sum is σ = 145699493472. Its totient is φ = 18566856000.

The previous prime is 61456358891. The next prime is 61456358927. The reversal of 61456358898 is 89885365416.

61456358898 is a `hidden beast` number, since 6 + 1 + 45 + 6 + 3 + 588 + 9 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (61456358891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403323 + ... + 534398.

It is an arithmetic number, because the mean of its divisors is an integer number (3035406114).

Almost surely, 2^61456358898 is an apocalyptic number.

61456358898 is an abundant number, since it is smaller than the sum of its proper divisors (84243134574).

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

61456358898 is a wasteful number, since it uses less digits than its factorization.

61456358898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938071 (or 938068 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The spelling of 61456358898 in words is "sixty-one billion, four hundred fifty-six million, three hundred fifty-eight thousand, eight hundred ninety-eight".