149954771520 has 84 divisors (see below), whose sum is σ = 515781942780. Its totient is φ = 39987938304.

The previous prime is 149954771509. The next prime is 149954771537. The reversal of 149954771520 is 25177459941.

149954771520 is a `hidden beast` number, since 1 + 4 + 9 + 9 + 5 + 47 + 71 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56773545984 + 93181225536 = 238272^2 + 305256^2 .

It is a super-2 number, since 2×149954771520² (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 11 ways as a sum of consecutive naturals, for example, 26030935 + ... + 26036694.

Almost surely, 2^149954771520 is an apocalyptic number.

149954771520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149954771520 is an abundant number, since it is smaller than the sum of its proper divisors (365827171260).

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

149954771520 is a wasteful number, since it uses less digits than its factorization.

149954771520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52067652 (or 52067639 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 54.

The spelling of 149954771520 in words is "one hundred forty-nine billion, nine hundred fifty-four million, seven hundred seventy-one thousand, five hundred twenty".