74680071440 has 80 divisors (see below), whose sum is σ = 189354547200. Its totient is φ = 27225110016.

The previous prime is 74680071419. The next prime is 74680071449. The reversal of 74680071440 is 4417008647.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×74680071440² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74680071449) 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, 372320 + ... + 536639.

It is an arithmetic number, because the mean of its divisors is an integer number (2366931840).

Almost surely, 2^74680071440 is an apocalyptic number.

It is an amenable number.

74680071440 is an abundant number, since it is smaller than the sum of its proper divisors (114674475760).

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

74680071440 is a wasteful number, since it uses less digits than its factorization.

74680071440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909064 (or 909058 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The spelling of 74680071440 in words is "seventy-four billion, six hundred eighty million, seventy-one thousand, four hundred forty".