20152744377 has 4 divisors (see below), whose sum is σ = 26870325840. Its totient is φ = 13435162916.

The previous prime is 20152744357. The next prime is 20152744457. The reversal of 20152744377 is 77344725102.

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 20152744377 - 2¹⁰ = 20152743353 is a prime.

It is a super-2 number, since 2×20152744377² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20152744357) 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, 3358790727 + ... + 3358790732.

It is an arithmetic number, because the mean of its divisors is an integer number (6717581460).

Almost surely, 2^20152744377 is an apocalyptic number.

It is an amenable number.

20152744377 is a deficient number, since it is larger than the sum of its proper divisors (6717581463).

20152744377 is an equidigital number, since it uses as much as digits as its factorization.

20152744377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717581462.

The product of its (nonzero) digits is 329280, while the sum is 42.

The spelling of 20152744377 in words is "twenty billion, one hundred fifty-two million, seven hundred forty-four thousand, three hundred seventy-seven".