61135395915 has 16 divisors (see below), whose sum is σ = 106709054976. Its totient is φ = 29641404000.

The previous prime is 61135395901. The next prime is 61135395917. The reversal of 61135395915 is 51959353116.

It is not a de Polignac number, because 61135395915 - 2⁶ = 61135395851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61135395917) 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, 185258611 + ... + 185258940.

It is an arithmetic number, because the mean of its divisors is an integer number (6669315936).

Almost surely, 2^61135395915 is an apocalyptic number.

61135395915 is a deficient number, since it is larger than the sum of its proper divisors (45573659061).

61135395915 is a wasteful number, since it uses less digits than its factorization.

61135395915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370517570.

The product of its digits is 546750, while the sum is 48.

The spelling of 61135395915 in words is "sixty-one billion, one hundred thirty-five million, three hundred ninety-five thousand, nine hundred fifteen".