7140923664 has 120 divisors (see below), whose sum is σ = 21484571328. Its totient is φ = 2037853440.

The previous prime is 7140923623. The next prime is 7140923683. The reversal of 7140923664 is 4663290417.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3214074 + ... + 3216294.

Almost surely, 2^7140923664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7140923664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10742285664).

7140923664 is an abundant number, since it is smaller than the sum of its proper divisors (14343647664).

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

7140923664 is a wasteful number, since it uses less digits than its factorization.

7140923664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613 (or 3600 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 7140923664 is about 84503.9860834979. The cubic root of 7140923664 is about 1925.6830017153.

The spelling of 7140923664 in words is "seven billion, one hundred forty million, nine hundred twenty-three thousand, six hundred sixty-four".