151231409189640 has 160 divisors (see below), whose sum is σ = 547405998373080. Its totient is φ = 37226193020928.

The previous prime is 151231409189629. The next prime is 151231409189741. The reversal of 151231409189640 is 46981904132151.

151231409189640 is a `hidden beast` number, since 1 + 5 + 12 + 3 + 1 + 409 + 189 + 6 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 54433319875236 + 96798089314404 = 7377894^2 + 9838602^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1795202529 + ... + 1795286768.

Almost surely, 2^{151231409189640} is an apocalyptic number.

151231409189640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151231409189640 is an abundant number, since it is smaller than the sum of its proper divisors (396174589183440).

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

151231409189640 is a wasteful number, since it uses less digits than its factorization.

151231409189640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590489333 (or 3590489320 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 151231409189640 in words is "one hundred fifty-one trillion, two hundred thirty-one billion, four hundred nine million, one hundred eighty-nine thousand, six hundred forty".