220500660157 has 4 divisors (see below), whose sum is σ = 232105958080. Its totient is φ = 208895362236.

The previous prime is 220500660109. The next prime is 220500660161. The reversal of 220500660157 is 751066005022.

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 220500660157 - 2³⁵ = 186140921789 is a prime.

It is a super-2 number, since 2×220500660157² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220510660157) 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, 5802648933 + ... + 5802648970.

It is an arithmetic number, because the mean of its divisors is an integer number (58026489520).

Almost surely, 2^220500660157 is an apocalyptic number.

It is an amenable number.

220500660157 is a deficient number, since it is larger than the sum of its proper divisors (11605297923).

220500660157 is a wasteful number, since it uses less digits than its factorization.

220500660157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11605297922.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 220500660157 its reverse (751066005022), we get a palindrome (971566665179).

The spelling of 220500660157 in words is "two hundred twenty billion, five hundred million, six hundred sixty thousand, one hundred fifty-seven".