61737134811 has 32 divisors (see below), whose sum is σ = 90773894400. Its totient is φ = 37012394880.

The previous prime is 61737134759. The next prime is 61737134917. The reversal of 61737134811 is 11843173716.

It is a happy number.

It is not a de Polignac number, because 61737134811 - 2¹⁴ = 61737118427 is a prime.

It is a super-2 number, since 2×61737134811² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61737132811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1246305 + ... + 1294893.

It is an arithmetic number, because the mean of its divisors is an integer number (2836684200).

Almost surely, 2^61737134811 is an apocalyptic number.

61737134811 is a deficient number, since it is larger than the sum of its proper divisors (29036759589).

61737134811 is a wasteful number, since it uses less digits than its factorization.

61737134811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49019.

The product of its digits is 84672, while the sum is 42.

The spelling of 61737134811 in words is "sixty-one billion, seven hundred thirty-seven million, one hundred thirty-four thousand, eight hundred eleven".