149417533440 has 448 divisors, whose sum is σ = 607151358720. Its totient is φ = 34150809600.

The previous prime is 149417533417. The next prime is 149417533469. The reversal of 149417533440 is 44335714941.

It is a happy number.

149417533440 is a `hidden beast` number, since 1 + 4 + 9 + 4 + 175 + 33 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 7731790 + ... + 7751090.

Almost surely, 2^149417533440 is an apocalyptic number.

149417533440 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 149417533440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303575679360).

149417533440 is an abundant number, since it is smaller than the sum of its proper divisors (457733825280).

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

149417533440 is an equidigital number, since it uses as much as digits as its factorization.

149417533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19348 (or 19318 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 149417533440 in words is "one hundred forty-nine billion, four hundred seventeen million, five hundred thirty-three thousand, four hundred forty".