74945214540 has 288 divisors, whose sum is σ = 261911569920. Its totient is φ = 16992488448.

The previous prime is 74945214529. The next prime is 74945214569. The reversal of 74945214540 is 4541254947.

74945214540 is a `hidden beast` number, since 7 + 4 + 94 + 5 + 2 + 14 + 540 = 666.

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

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, 121074351 + ... + 121074969.

Almost surely, 2^74945214540 is an apocalyptic number.

74945214540 is a gapful number since it is divisible by the number (70) 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 74945214540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130955784960).

74945214540 is an abundant number, since it is smaller than the sum of its proper divisors (186966355380).

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

74945214540 is a wasteful number, since it uses less digits than its factorization.

74945214540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1256 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 74945214540 in words is "seventy-four billion, nine hundred forty-five million, two hundred fourteen thousand, five hundred forty".