149194664640 has 560 divisors, whose sum is σ = 613897143552. Its totient is φ = 33687373824.

The previous prime is 149194664639. The next prime is 149194664657. The reversal of 149194664640 is 46466491941.

149194664640 is a `hidden beast` number, since 1 + 4 + 91 + 94 + 6 + 6 + 464 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (560).

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 79 ways as a sum of consecutive naturals, for example, 15054567 + ... + 15064473.

Almost surely, 2^149194664640 is an apocalyptic number.

149194664640 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 149194664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306948571776).

149194664640 is an abundant number, since it is smaller than the sum of its proper divisors (464702478912).

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

149194664640 is an equidigital number, since it uses as much as digits as its factorization.

149194664640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026 (or 10007 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 149194664640 in words is "one hundred forty-nine billion, one hundred ninety-four million, six hundred sixty-four thousand, six hundred forty".