20015184951 has 12 divisors (see below), whose sum is σ = 28983651112. Its totient is φ = 13309843536.

The previous prime is 20015184949. The next prime is 20015184983. The reversal of 20015184951 is 15948151002.

It is not a de Polignac number, because 20015184951 - 2¹ = 20015184949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015180951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2797321 + ... + 2804466.

Almost surely, 2^20015184951 is an apocalyptic number.

20015184951 is a deficient number, since it is larger than the sum of its proper divisors (8968466161).

20015184951 is a wasteful number, since it uses less digits than its factorization.

20015184951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602190 (or 5602187 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 20015184951 in words is "twenty billion, fifteen million, one hundred eighty-four thousand, nine hundred fifty-one".