61454125664 has 48 divisors (see below), whose sum is σ = 121831226496. Its totient is φ = 30513100800.

The previous prime is 61454125613. The next prime is 61454125679. The reversal of 61454125664 is 46652145416.

61454125664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61454125664² (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 7 ways as a sum of consecutive naturals, for example, 13014824 + ... + 13019544.

It is an arithmetic number, because the mean of its divisors is an integer number (2538150552).

Almost surely, 2^61454125664 is an apocalyptic number.

It is an amenable number.

61454125664 is a deficient number, since it is larger than the sum of its proper divisors (60377100832).

61454125664 is a wasteful number, since it uses less digits than its factorization.

61454125664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7479 (or 7471 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The spelling of 61454125664 in words is "sixty-one billion, four hundred fifty-four million, one hundred twenty-five thousand, six hundred sixty-four".