77730053476515 has 32 divisors (see below), whose sum is σ = 135676321512192. Its totient is φ = 37686730224000.

The previous prime is 77730053476483. The next prime is 77730053476571. The reversal of 77730053476515 is 51567435003777.

It is not a de Polignac number, because 77730053476515 - 2⁵ = 77730053476483 is a prime.

It is a super-2 number, since 2×77730053476515² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7524385 + ... + 14562845.

It is an arithmetic number, because the mean of its divisors is an integer number (4239885047256).

Almost surely, 2^{77730053476515} is an apocalyptic number.

77730053476515 is a deficient number, since it is larger than the sum of its proper divisors (57946268035677).

77730053476515 is a wasteful number, since it uses less digits than its factorization.

77730053476515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7105411.

The product of its (nonzero) digits is 64827000, while the sum is 60.

The spelling of 77730053476515 in words is "seventy-seven trillion, seven hundred thirty billion, fifty-three million, four hundred seventy-six thousand, five hundred fifteen".