64161100505416 has 32 divisors (see below), whose sum is σ = 123241506365880. Its totient is φ = 31296765427200.

The previous prime is 64161100505393. The next prime is 64161100505471. The reversal of 64161100505416 is 61450500116146.

It can be written as a sum of positive squares in 4 ways, for example, as 21398525229316 + 42762575276100 = 4625854^2 + 6539310^2 .

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, 3574786 + ... + 11878606.

Almost surely, 2^{64161100505416} is an apocalyptic number.

It is an amenable number.

64161100505416 is a deficient number, since it is larger than the sum of its proper divisors (59080405860464).

64161100505416 is a wasteful number, since it uses less digits than its factorization.

64161100505416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8327425 (or 8327421 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 64161100505416 in words is "sixty-four trillion, one hundred sixty-one billion, one hundred million, five hundred five thousand, four hundred sixteen".