216140153887 has 16 divisors (see below), whose sum is σ = 260064424960. Its totient is φ = 175481124192.

The previous prime is 216140153869. The next prime is 216140153891. The reversal of 216140153887 is 788351041612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216140153887 is a prime.

It is a super-2 number, since 2×216140153887² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216140153857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622333 + ... + 905305.

It is an arithmetic number, because the mean of its divisors is an integer number (16254026560).

Almost surely, 2^216140153887 is an apocalyptic number.

216140153887 is a deficient number, since it is larger than the sum of its proper divisors (43924271073).

216140153887 is a wasteful number, since it uses less digits than its factorization.

216140153887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288742.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 216140153887 in words is "two hundred sixteen billion, one hundred forty million, one hundred fifty-three thousand, eight hundred eighty-seven".