5150661561 has 32 divisors (see below), whose sum is σ = 8147589120. Its totient is φ = 3208079952.

The previous prime is 5150661517. The next prime is 5150661583. The reversal of 5150661561 is 1651660515.

It is not a de Polignac number, because 5150661561 - 2⁶ = 5150661497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5150663561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69741 + ... + 123146.

It is an arithmetic number, because the mean of its divisors is an integer number (254612160).

Almost surely, 2^5150661561 is an apocalyptic number.

It is an amenable number.

5150661561 is a deficient number, since it is larger than the sum of its proper divisors (2996927559).

5150661561 is a wasteful number, since it uses less digits than its factorization.

5150661561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192962 (or 192956 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 5150661561 is about 71768.1096379165. The cubic root of 5150661561 is about 1726.9814448539.

The spelling of 5150661561 in words is "five billion, one hundred fifty million, six hundred sixty-one thousand, five hundred sixty-one".