61519974411 has 16 divisors (see below), whose sum is σ = 93748197888. Its totient is φ = 35152968000.

The previous prime is 61519974403. The next prime is 61519974443. The reversal of 61519974411 is 11447991516.

It is not a de Polignac number, because 61519974411 - 2³ = 61519974403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61519974401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020511 + ... + 1079111.

It is an arithmetic number, because the mean of its divisors is an integer number (5859262368).

Almost surely, 2^61519974411 is an apocalyptic number.

61519974411 is a deficient number, since it is larger than the sum of its proper divisors (32228223477).

61519974411 is a wasteful number, since it uses less digits than its factorization.

61519974411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108602.

The product of its digits is 272160, while the sum is 48.

The spelling of 61519974411 in words is "sixty-one billion, five hundred nineteen million, nine hundred seventy-four thousand, four hundred eleven".