16155649783 has 64 divisors (see below), whose sum is σ = 21906841600. Its totient is φ = 11555758080.

The previous prime is 16155649751. The next prime is 16155649813. The reversal of 16155649783 is 38794655161.

It is a cyclic number.

It is not a de Polignac number, because 16155649783 - 2⁵ = 16155649751 is a prime.

It is a super-2 number, since 2×16155649783² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16155649483) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3910663 + ... + 3914791.

It is an arithmetic number, because the mean of its divisors is an integer number (342294400).

Almost surely, 2^16155649783 is an apocalyptic number.

16155649783 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16155649783 is a deficient number, since it is larger than the sum of its proper divisors (5751191817).

16155649783 is a wasteful number, since it uses less digits than its factorization.

16155649783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272.

The product of its digits is 5443200, while the sum is 55.

The spelling of 16155649783 in words is "sixteen billion, one hundred fifty-five million, six hundred forty-nine thousand, seven hundred eighty-three".