2156064246516 has 24 divisors (see below), whose sum is σ = 5030955207040. Its totient is φ = 718668277632.

The previous prime is 2156064246463. The next prime is 2156064246521. The reversal of 2156064246516 is 6156424606512.

It is a happy number.

It is a super-2 number, since 2×2156064246516² (a number of 25 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, 2018581 + ... + 2895996.

Almost surely, 2^{2156064246516} is an apocalyptic number.

It is an amenable number.

2156064246516 is an abundant number, since it is smaller than the sum of its proper divisors (2874890960524).

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

2156064246516 is a wasteful number, since it uses less digits than its factorization.

2156064246516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951143 (or 4951141 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 2156064246516 in words is "two trillion, one hundred fifty-six billion, sixty-four million, two hundred forty-six thousand, five hundred sixteen".