157700217061 has 4 divisors (see below), whose sum is σ = 160053951712. Its totient is φ = 155346482412.

The previous prime is 157700217053. The next prime is 157700217079. The reversal of 157700217061 is 160712007751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157700217061 - 2³ = 157700217053 is a prime.

It is a super-2 number, since 2×157700217061² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157700217061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157700217091) 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, 1176867225 + ... + 1176867358.

It is an arithmetic number, because the mean of its divisors is an integer number (40013487928).

Almost surely, 2^157700217061 is an apocalyptic number.

It is an amenable number.

157700217061 is a deficient number, since it is larger than the sum of its proper divisors (2353734651).

157700217061 is an equidigital number, since it uses as much as digits as its factorization.

157700217061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353734650.

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

The spelling of 157700217061 in words is "one hundred fifty-seven billion, seven hundred million, two hundred seventeen thousand, sixty-one".