61541135379 has 12 divisors (see below), whose sum is σ = 94121736696. Its totient is φ = 38614045632.

The previous prime is 61541135339. The next prime is 61541135389. The reversal of 61541135379 is 97353114516.

61541135379 is a `hidden beast` number, since 6 + 1 + 541 + 1 + 35 + 3 + 79 = 666.

It is not a de Polignac number, because 61541135379 - 2¹² = 61541131283 is a prime.

It is a super-2 number, since 2×61541135379² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61541135339) 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, 201114669 + ... + 201114974.

It is an arithmetic number, because the mean of its divisors is an integer number (7843478058).

Almost surely, 2^61541135379 is an apocalyptic number.

61541135379 is a deficient number, since it is larger than the sum of its proper divisors (32580601317).

61541135379 is a wasteful number, since it uses less digits than its factorization.

61541135379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402229666 (or 402229663 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The spelling of 61541135379 in words is "sixty-one billion, five hundred forty-one million, one hundred thirty-five thousand, three hundred seventy-nine".