7151686620 has 96 divisors (see below), whose sum is σ = 21612951360. Its totient is φ = 1756508160.

The previous prime is 7151686609. The next prime is 7151686627. The reversal of 7151686620 is 266861517.

It is a super-2 number, since 2×7151686620² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7151686627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349636 + ... + 369524.

It is an arithmetic number, because the mean of its divisors is an integer number (225134910).

Almost surely, 2^7151686620 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 7151686620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10806475680).

7151686620 is an abundant number, since it is smaller than the sum of its proper divisors (14461264740).

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

7151686620 is a wasteful number, since it uses less digits than its factorization.

7151686620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20375 (or 20373 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 7151686620 is about 84567.6452314950. The cubic root of 7151686620 is about 1926.6499932040.

The spelling of 7151686620 in words is "seven billion, one hundred fifty-one million, six hundred eighty-six thousand, six hundred twenty".