2157928762659 has 8 divisors (see below), whose sum is σ = 2892302426112. Its totient is φ = 1431087137160.

The previous prime is 2157928762631. The next prime is 2157928762793. The reversal of 2157928762659 is 9562678297512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2157928762659 - 2⁸ = 2157928762403 is a prime.

It is a super-2 number, since 2×2157928762659² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2157928762593 and 2157928762602.

It is not an unprimeable number, because it can be changed into a prime (2157928762259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1883008819 + ... + 1883009964.

It is an arithmetic number, because the mean of its divisors is an integer number (361537803264).

Almost surely, 2^{2157928762659} is an apocalyptic number.

2157928762659 is a deficient number, since it is larger than the sum of its proper divisors (734373663453).

2157928762659 is a wasteful number, since it uses less digits than its factorization.

2157928762659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766018977.

The product of its digits is 228614400, while the sum is 69.

The spelling of 2157928762659 in words is "two trillion, one hundred fifty-seven billion, nine hundred twenty-eight million, seven hundred sixty-two thousand, six hundred fifty-nine".