61831199541 has 16 divisors (see below), whose sum is σ = 86039156160. Its totient is φ = 39447179520.

The previous prime is 61831199503. The next prime is 61831199557. The reversal of 61831199541 is 14599113816.

It is not a de Polignac number, because 61831199541 - 2²⁷ = 61696981813 is a prime.

It is a super-2 number, since 2×61831199541² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61831199741) 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, 3134875 + ... + 3154536.

It is an arithmetic number, because the mean of its divisors is an integer number (5377447260).

Almost surely, 2^61831199541 is an apocalyptic number.

It is an amenable number.

61831199541 is a deficient number, since it is larger than the sum of its proper divisors (24207956619).

61831199541 is a wasteful number, since it uses less digits than its factorization.

61831199541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6289556.

The product of its digits is 233280, while the sum is 48.

The spelling of 61831199541 in words is "sixty-one billion, eight hundred thirty-one million, one hundred ninety-nine thousand, five hundred forty-one".