61276997707 has 4 divisors (see below), whose sum is σ = 61281016216. Its totient is φ = 61272979200.

The previous prime is 61276997699. The next prime is 61276997729. The reversal of 61276997707 is 70779967216.

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

It is a cyclic number.

It is not a de Polignac number, because 61276997707 - 2³ = 61276997699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61276998707) 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, 1986294 + ... + 2016907.

It is an arithmetic number, because the mean of its divisors is an integer number (15320254054).

Almost surely, 2^61276997707 is an apocalyptic number.

61276997707 is a deficient number, since it is larger than the sum of its proper divisors (4018509).

61276997707 is a wasteful number, since it uses less digits than its factorization.

61276997707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018508.

The product of its (nonzero) digits is 14002632, while the sum is 61.

The spelling of 61276997707 in words is "sixty-one billion, two hundred seventy-six million, nine hundred ninety-seven thousand, seven hundred seven".