149681956428 has 60 divisors (see below), whose sum is σ = 391337255232. Its totient is φ = 49889005920.

The previous prime is 149681956409. The next prime is 149681956447. The reversal of 149681956428 is 824659186941.

149681956428 is a `hidden beast` number, since 1 + 4 + 9 + 68 + 1 + 9 + 564 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (149681956409) and next prime (149681956447).

It is a super-2 number, since 2×149681956428² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4752613 + ... + 4784003.

Almost surely, 2^149681956428 is an apocalyptic number.

149681956428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

149681956428 is an abundant number, since it is smaller than the sum of its proper divisors (241655298804).

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

149681956428 is a wasteful number, since it uses less digits than its factorization.

149681956428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46124 (or 46113 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The spelling of 149681956428 in words is "one hundred forty-nine billion, six hundred eighty-one million, nine hundred fifty-six thousand, four hundred twenty-eight".