7472117891 has 16 divisors (see below), whose sum is σ = 8856864768. Its totient is φ = 6168657600.

The previous prime is 7472117879. The next prime is 7472117903. The reversal of 7472117891 is 1987112747.

It is an interprime number because it is at equal distance from previous prime (7472117879) and next prime (7472117903).

It is not a de Polignac number, because 7472117891 - 2¹⁰ = 7472116867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7472111891) 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, 35810 + ... + 127383.

It is an arithmetic number, because the mean of its divisors is an integer number (553554048).

Almost surely, 2^7472117891 is an apocalyptic number.

7472117891 is a deficient number, since it is larger than the sum of its proper divisors (1384746877).

7472117891 is a wasteful number, since it uses less digits than its factorization.

7472117891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163442.

The product of its digits is 197568, while the sum is 47.

The square root of 7472117891 is about 86441.4130553174. The cubic root of 7472117891 is about 1955.0051469962.

The spelling of 7472117891 in words is "seven billion, four hundred seventy-two million, one hundred seventeen thousand, eight hundred ninety-one".