149777470920 has 384 divisors, whose sum is σ = 588612096000. Its totient is φ = 30118233600.

The previous prime is 149777470903. The next prime is 149777470949. The reversal of 149777470920 is 29074777941.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1967731 + ... + 2042429.

It is an arithmetic number, because the mean of its divisors is an integer number (1532844000).

Almost surely, 2^149777470920 is an apocalyptic number.

149777470920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149777470920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294306048000).

149777470920 is an abundant number, since it is smaller than the sum of its proper divisors (438834625080).

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

149777470920 is a wasteful number, since it uses less digits than its factorization.

149777470920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74769 (or 74758 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 57.

The spelling of 149777470920 in words is "one hundred forty-nine billion, seven hundred seventy-seven million, four hundred seventy thousand, nine hundred twenty".