2156462461465 has 24 divisors (see below), whose sum is σ = 2913246934920. Its totient is φ = 1523226971904.

The previous prime is 2156462461427. The next prime is 2156462461469. The reversal of 2156462461465 is 5641642646512.

It can be written as a sum of positive squares in 4 ways, for example, as 40566390921 + 2115896070544 = 201411^2 + 1454612^2 .

It is not a de Polignac number, because 2156462461465 - 2⁷ = 2156462461337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2156462461469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31323220 + ... + 31391989.

It is an arithmetic number, because the mean of its divisors is an integer number (121385288955).

Almost surely, 2^{2156462461465} is an apocalyptic number.

It is an amenable number.

2156462461465 is a deficient number, since it is larger than the sum of its proper divisors (756784473455).

2156462461465 is a wasteful number, since it uses less digits than its factorization.

2156462461465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62715273 (or 62715250 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The spelling of 2156462461465 in words is "two trillion, one hundred fifty-six billion, four hundred sixty-two million, four hundred sixty-one thousand, four hundred sixty-five".