61887373911 has 12 divisors (see below), whose sum is σ = 97519498440. Its totient is φ = 37507499280.

The previous prime is 61887373853. The next prime is 61887373921. The reversal of 61887373911 is 11937378816.

61887373911 is a `hidden beast` number, since 6 + 188 + 7 + 373 + 91 + 1 = 666.

61887373911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61887373911 - 2⁷ = 61887373783 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61887373921) 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, 312562396 + ... + 312562593.

It is an arithmetic number, because the mean of its divisors is an integer number (8126624870).

Almost surely, 2^61887373911 is an apocalyptic number.

61887373911 is a deficient number, since it is larger than the sum of its proper divisors (35632124529).

61887373911 is a wasteful number, since it uses less digits than its factorization.

61887373911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625125006 (or 625125003 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The spelling of 61887373911 in words is "sixty-one billion, eight hundred eighty-seven million, three hundred seventy-three thousand, nine hundred eleven".