2161355120776 has 64 divisors (see below), whose sum is σ = 4104003024000. Its totient is φ = 1067026867200.

The previous prime is 2161355120761. The next prime is 2161355120833. The reversal of 2161355120776 is 6770215531612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451314190 + ... + 451318978.

It is an arithmetic number, because the mean of its divisors is an integer number (64125047250).

Almost surely, 2^{2161355120776} is an apocalyptic number.

It is an amenable number.

2161355120776 is a deficient number, since it is larger than the sum of its proper divisors (1942647903224).

2161355120776 is a wasteful number, since it uses less digits than its factorization.

2161355120776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6542 (or 6538 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 2161355120776 in words is "two trillion, one hundred sixty-one billion, three hundred fifty-five million, one hundred twenty thousand, seven hundred seventy-six".