61334311951 has 8 divisors (see below), whose sum is σ = 70846050384. Its totient is φ = 52478555520.

The previous prime is 61334311891. The next prime is 61334311981. The reversal of 61334311951 is 15911343316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61334311951 - 2²³ = 61325923343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61334311951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61334311981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163995300 + ... + 163995673.

It is an arithmetic number, because the mean of its divisors is an integer number (8855756298).

Almost surely, 2^61334311951 is an apocalyptic number.

61334311951 is a deficient number, since it is larger than the sum of its proper divisors (9511738433).

61334311951 is a wasteful number, since it uses less digits than its factorization.

61334311951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327991001.

The product of its digits is 29160, while the sum is 37.

It can be divided in two parts, 6133 and 4311951, that added together give a square (4318084 = 2078²).

The spelling of 61334311951 in words is "sixty-one billion, three hundred thirty-four million, three hundred eleven thousand, nine hundred fifty-one".