15640262346057 has 16 divisors (see below), whose sum is σ = 22080749094720. Its totient is φ = 9813329620992.

The previous prime is 15640262346013. The next prime is 15640262346067. The reversal of 15640262346057 is 75064326204651.

It is not a de Polignac number, because 15640262346057 - 2¹² = 15640262341961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (15640262346067) 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, 406569 + ... + 5607657.

It is an arithmetic number, because the mean of its divisors is an integer number (1380046818420).

Almost surely, 2^{15640262346057} is an apocalyptic number.

15640262346057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

15640262346057 is a deficient number, since it is larger than the sum of its proper divisors (6440486748663).

15640262346057 is a wasteful number, since it uses less digits than its factorization.

15640262346057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260072.

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 15640262346057 in words is "fifteen trillion, six hundred forty billion, two hundred sixty-two million, three hundred forty-six thousand, fifty-seven".