74146621620 has 48 divisors (see below), whose sum is σ = 207622376640. Its totient is φ = 19771305216.

The previous prime is 74146621567. The next prime is 74146621621. The reversal of 74146621620 is 2612664147.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74146621621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1959399 + ... + 1996881.

It is an arithmetic number, because the mean of its divisors is an integer number (4325466180).

Almost surely, 2^74146621620 is an apocalyptic number.

It is an amenable number.

74146621620 is an abundant number, since it is smaller than the sum of its proper divisors (133475755020).

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

74146621620 is a wasteful number, since it uses less digits than its factorization.

74146621620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70464 (or 70462 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 74146621620 in words is "seventy-four billion, one hundred forty-six million, six hundred twenty-one thousand, six hundred twenty".