2156455705076 has 12 divisors (see below), whose sum is σ = 3845001210372. Its totient is φ = 1057883930688.

The previous prime is 2156455705073. The next prime is 2156455705093. The reversal of 2156455705076 is 6705075546512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 849206482576 + 1307249222500 = 921524^2 + 1143350^2 .

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156455705073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5085980225 + ... + 5085980648.

It is an arithmetic number, because the mean of its divisors is an integer number (320416767531).

Almost surely, 2^{2156455705076} is an apocalyptic number.

It is an amenable number.

2156455705076 is a deficient number, since it is larger than the sum of its proper divisors (1688545505296).

2156455705076 is a wasteful number, since it uses less digits than its factorization.

2156455705076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10171960930 (or 10171960928 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 53.

The spelling of 2156455705076 in words is "two trillion, one hundred fifty-six billion, four hundred fifty-five million, seven hundred five thousand, seventy-six".