20037189077 has 8 divisors (see below), whose sum is σ = 21220580952. Its totient is φ = 18854323200.

The previous prime is 20037189031. The next prime is 20037189113. The reversal of 20037189077 is 77098173002.

It can be written as a sum of positive squares in 4 ways, for example, as 1039804516 + 18997384561 = 32246^2 + 137831^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20037189077 - 2³⁴ = 2857319893 is a prime.

It is a super-2 number, since 2×20037189077² (a number of 21 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 (20037189377) 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, 51674 + ... + 206747.

It is an arithmetic number, because the mean of its divisors is an integer number (2652572619).

Almost surely, 2^20037189077 is an apocalyptic number.

It is an amenable number.

20037189077 is a deficient number, since it is larger than the sum of its proper divisors (1183391875).

20037189077 is a wasteful number, since it uses less digits than its factorization.

20037189077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262999.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 20037189077 in words is "twenty billion, thirty-seven million, one hundred eighty-nine thousand, seventy-seven".