1056662157015 has 80 divisors (see below), whose sum is σ = 1926923644800. Its totient is φ = 553813219008.

The previous prime is 1056662156989. The next prime is 1056662157059. The reversal of 1056662157015 is 5107512666501.

It is a happy number.

It is not a de Polignac number, because 1056662157015 - 2⁷ = 1056662156887 is a prime.

It is a super-2 number, since 2×1056662157015² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 96028504 + ... + 96039506.

It is an arithmetic number, because the mean of its divisors is an integer number (24086545560).

Almost surely, 2^{1056662157015} is an apocalyptic number.

1056662157015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1056662157015 is a deficient number, since it is larger than the sum of its proper divisors (870261487785).

1056662157015 is a wasteful number, since it uses less digits than its factorization.

1056662157015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15098 (or 15089 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 1056662157015 in words is "one trillion, fifty-six billion, six hundred sixty-two million, one hundred fifty-seven thousand, fifteen".