150854511981 has 16 divisors (see below), whose sum is σ = 207667611648. Its totient is φ = 97344172800.

The previous prime is 150854511979. The next prime is 150854512019. The reversal of 150854511981 is 189115458051.

It is not a de Polignac number, because 150854511981 - 2¹ = 150854511979 is a prime.

It is a super-2 number, since 2×150854511981² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 150854511981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150854511971) 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, 4812960 + ... + 4844201.

It is an arithmetic number, because the mean of its divisors is an integer number (12979225728).

Almost surely, 2^150854511981 is an apocalyptic number.

It is an amenable number.

150854511981 is a deficient number, since it is larger than the sum of its proper divisors (56813099667).

150854511981 is a wasteful number, since it uses less digits than its factorization.

150854511981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657332.

The product of its (nonzero) digits is 288000, while the sum is 48.

The spelling of 150854511981 in words is "one hundred fifty billion, eight hundred fifty-four million, five hundred eleven thousand, nine hundred eighty-one".