61263959613 has 16 divisors (see below), whose sum is σ = 86023396800. Its totient is φ = 38675525760.

The previous prime is 61263959611. The next prime is 61263959639. The reversal of 61263959613 is 31695936216.

It is a happy number.

It is not a de Polignac number, because 61263959613 - 2¹ = 61263959611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61263959611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115368 + ... + 368561.

It is an arithmetic number, because the mean of its divisors is an integer number (5376462300).

Almost surely, 2^61263959613 is an apocalyptic number.

It is an amenable number.

61263959613 is a deficient number, since it is larger than the sum of its proper divisors (24759437187).

61263959613 is a wasteful number, since it uses less digits than its factorization.

61263959613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486172.

The product of its digits is 1574640, while the sum is 51.

The spelling of 61263959613 in words is "sixty-one billion, two hundred sixty-three million, nine hundred fifty-nine thousand, six hundred thirteen".