7091474640 has 80 divisors (see below), whose sum is σ = 22115334528. Its totient is φ = 1879725568.

The previous prime is 7091474629. The next prime is 7091474713. The reversal of 7091474640 is 464741907.

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

It is a junction number, because it is equal to n+sod(n) for n = 7091474592 and 7091474601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48387 + ... + 128546.

Almost surely, 2^7091474640 is an apocalyptic number.

It is an amenable number.

7091474640 is an abundant number, since it is smaller than the sum of its proper divisors (15023859888).

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

7091474640 is a wasteful number, since it uses less digits than its factorization.

7091474640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177116 (or 177110 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 7091474640 is about 84210.8938320928. The cubic root of 7091474640 is about 1921.2277520678.

The spelling of 7091474640 in words is "seven billion, ninety-one million, four hundred seventy-four thousand, six hundred forty".