61734511331 has 4 divisors (see below), whose sum is σ = 65365953192. Its totient is φ = 58103069472.

The previous prime is 61734511259. The next prime is 61734511427. The reversal of 61734511331 is 13311543716.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-61734511331 is a prime.

It is a super-2 number, since 2×61734511331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61734511291 and 61734511300.

It is not an unprimeable number, because it can be changed into a prime (61734411331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1815720905 + ... + 1815720938.

It is an arithmetic number, because the mean of its divisors is an integer number (16341488298).

Almost surely, 2^61734511331 is an apocalyptic number.

61734511331 is a deficient number, since it is larger than the sum of its proper divisors (3631441861).

61734511331 is a wasteful number, since it uses less digits than its factorization.

61734511331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631441860.

The product of its digits is 22680, while the sum is 35.

The spelling of 61734511331 in words is "sixty-one billion, seven hundred thirty-four million, five hundred eleven thousand, three hundred thirty-one".