2151399064776 has 64 divisors (see below), whose sum is σ = 5800284806400. Its totient is φ = 661048194048.

The previous prime is 2151399064751. The next prime is 2151399064777. The reversal of 2151399064776 is 6774609931512.

It is not an unprimeable number, because it can be changed into a prime (2151399064777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4570881 + ... + 5019536.

It is an arithmetic number, because the mean of its divisors is an integer number (90629450100).

Almost surely, 2^{2151399064776} is an apocalyptic number.

2151399064776 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2151399064776 is an abundant number, since it is smaller than the sum of its proper divisors (3648885741624).

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

2151399064776 is a wasteful number, since it uses less digits than its factorization.

2151399064776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9591158 (or 9591154 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 60.

The spelling of 2151399064776 in words is "two trillion, one hundred fifty-one billion, three hundred ninety-nine million, sixty-four thousand, seven hundred seventy-six".