61276997706 has 32 divisors (see below), whose sum is σ = 124613952768. Its totient is φ = 20082613440.

The previous prime is 61276997699. The next prime is 61276997729. The reversal of 61276997706 is 60779967216.

It is a super-2 number, since 2×61276997706² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61276997706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897820 + ... + 963656.

It is an arithmetic number, because the mean of its divisors is an integer number (3894186024).

Almost surely, 2^61276997706 is an apocalyptic number.

61276997706 is an abundant number, since it is smaller than the sum of its proper divisors (63336955062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61276997706 is a wasteful number, since it uses less digits than its factorization.

61276997706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68446.

The product of its (nonzero) digits is 12002256, while the sum is 60.

The spelling of 61276997706 in words is "sixty-one billion, two hundred seventy-six million, nine hundred ninety-seven thousand, seven hundred six".