151785670440 has 64 divisors (see below), whose sum is σ = 458833066560. Its totient is φ = 40167196160.

The previous prime is 151785670409. The next prime is 151785670469. The reversal of 151785670440 is 44076587151.

It is a self number, because there is not a number n which added to its sum of digits gives 151785670440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4812069 + ... + 4843508.

It is an arithmetic number, because the mean of its divisors is an integer number (7169266665).

Almost surely, 2^151785670440 is an apocalyptic number.

151785670440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151785670440 is an abundant number, since it is smaller than the sum of its proper divisors (307047396120).

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

151785670440 is a wasteful number, since it uses less digits than its factorization.

151785670440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9655722 (or 9655718 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 151785670440 in words is "one hundred fifty-one billion, seven hundred eighty-five million, six hundred seventy thousand, four hundred forty".