16056001557 has 12 divisors (see below), whose sum is σ = 23518651104. Its totient is φ = 10553240040.

The previous prime is 16056001553. The next prime is 16056001567. The reversal of 16056001557 is 75510065061.

It is not a de Polignac number, because 16056001557 - 2² = 16056001553 is a prime.

It is a super-3 number, since 3×16056001557³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16056001553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12562743 + ... + 12564020.

It is an arithmetic number, because the mean of its divisors is an integer number (1959887592).

Almost surely, 2^16056001557 is an apocalyptic number.

It is an amenable number.

16056001557 is a deficient number, since it is larger than the sum of its proper divisors (7462649547).

16056001557 is a wasteful number, since it uses less digits than its factorization.

16056001557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25126840 (or 25126837 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The spelling of 16056001557 in words is "sixteen billion, fifty-six million, one thousand, five hundred fifty-seven".