1551156160656 has 40 divisors (see below), whose sum is σ = 4075071276960. Its totient is φ = 508288458496.

The previous prime is 1551156160607. The next prime is 1551156160661. The reversal of 1551156160656 is 6560616511551.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273859485 + ... + 273865148.

It is an arithmetic number, because the mean of its divisors is an integer number (101876781924).

Almost surely, 2^{1551156160656} is an apocalyptic number.

1551156160656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1551156160656 is an abundant number, since it is smaller than the sum of its proper divisors (2523915116304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551156160656 is a wasteful number, since it uses less digits than its factorization.

1551156160656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547724703 (or 547724697 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 1551156160656 in words is "one trillion, five hundred fifty-one billion, one hundred fifty-six million, one hundred sixty thousand, six hundred fifty-six".