2157701716 has 12 divisors (see below), whose sum is σ = 3776304532. Its totient is φ = 1078757568.

The previous prime is 2157701681. The next prime is 2157701719. The reversal of 2157701716 is 6171077512.

It can be written as a sum of positive squares in 2 ways, for example, as 457788816 + 1699912900 = 21396^2 + 41230^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157701719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72046 + ... + 97498.

Almost surely, 2^2157701716 is an apocalyptic number.

It is an amenable number.

2157701716 is a deficient number, since it is larger than the sum of its proper divisors (1618602816).

2157701716 is a wasteful number, since it uses less digits than its factorization.

2157701716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46650 (or 46648 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 37.

The square root of 2157701716 is about 46451.0679748055. The cubic root of 2157701716 is about 1292.2021788356.

The spelling of 2157701716 in words is "two billion, one hundred fifty-seven million, seven hundred one thousand, seven hundred sixteen".