1056412156639 has 32 divisors (see below), whose sum is σ = 1311848372736. Its totient is φ = 830012037120.

The previous prime is 1056412156621. The next prime is 1056412156663. The reversal of 1056412156639 is 9366512146501.

It is not a de Polignac number, because 1056412156639 - 2¹³ = 1056412148447 is a prime.

It is a super-2 number, since 2×1056412156639² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1056412156592 and 1056412156601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056412156139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1478119 + ... + 2073079.

It is an arithmetic number, because the mean of its divisors is an integer number (40995261648).

Almost surely, 2^{1056412156639} is an apocalyptic number.

1056412156639 is a deficient number, since it is larger than the sum of its proper divisors (255436216097).

1056412156639 is a wasteful number, since it uses less digits than its factorization.

1056412156639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595375.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 1056412156639 in words is "one trillion, fifty-six billion, four hundred twelve million, one hundred fifty-six thousand, six hundred thirty-nine".