20151055051 has 8 divisors (see below), whose sum is σ = 20272888944. Its totient is φ = 20029283040.

The previous prime is 20151055039. The next prime is 20151055063. The reversal of 20151055051 is 15055015102.

It is an interprime number because it is at equal distance from previous prime (20151055039) and next prime (20151055063).

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 20151055051 - 2¹³ = 20151046859 is a prime.

It is a super-2 number, since 2×20151055051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20151055031) 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, 751660 + ... + 778006.

It is an arithmetic number, because the mean of its divisors is an integer number (2534111118).

Almost surely, 2^20151055051 is an apocalyptic number.

20151055051 is a deficient number, since it is larger than the sum of its proper divisors (121833893).

20151055051 is a wasteful number, since it uses less digits than its factorization.

20151055051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30941.

The product of its (nonzero) digits is 1250, while the sum is 25.

The spelling of 20151055051 in words is "twenty billion, one hundred fifty-one million, fifty-five thousand, fifty-one".