61299997786901 has 4 divisors (see below), whose sum is σ = 62214923127072. Its totient is φ = 60385072446732.

The previous prime is 61299997786871. The next prime is 61299997786921. The reversal of 61299997786901 is 10968779999216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61299997786901 - 2²² = 61299993592597 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 61299997786901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61299997786921) 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, 457462669985 + ... + 457462670118.

It is an arithmetic number, because the mean of its divisors is an integer number (15553730781768).

Almost surely, 2^{61299997786901} is an apocalyptic number.

It is an amenable number.

61299997786901 is a deficient number, since it is larger than the sum of its proper divisors (914925340171).

61299997786901 is an equidigital number, since it uses as much as digits as its factorization.

61299997786901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914925340170.

The product of its (nonzero) digits is 1666598976, while the sum is 83.

The spelling of 61299997786901 in words is "sixty-one trillion, two hundred ninety-nine billion, nine hundred ninety-seven million, seven hundred eighty-six thousand, nine hundred one".