149406992640 has 288 divisors, whose sum is σ = 537663571200. Its totient is φ = 39280066560.

The previous prime is 149406992587. The next prime is 149406992677. The reversal of 149406992640 is 46299604941.

It is a happy number.

149406992640 is a `hidden beast` number, since 1 + 494 + 0 + 6 + 9 + 92 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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 31 ways as a sum of consecutive naturals, for example, 2423316 + ... + 2484204.

It is an arithmetic number, because the mean of its divisors is an integer number (1866887400).

Almost surely, 2^149406992640 is an apocalyptic number.

149406992640 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 149406992640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268831785600).

149406992640 is an abundant number, since it is smaller than the sum of its proper divisors (388256578560).

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

149406992640 is an equidigital number, since it uses as much as digits as its factorization.

149406992640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60990 (or 60970 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 149406992640 in words is "one hundred forty-nine billion, four hundred six million, nine hundred ninety-two thousand, six hundred forty".