61263987311455 has 16 divisors (see below), whose sum is σ = 73763116146720. Its totient is φ = 48847080102912.

The previous prime is 61263987311431. The next prime is 61263987311521. The reversal of 61263987311455 is 55411378936216.

It is a cyclic number.

It is not a de Polignac number, because 61263987311455 - 2⁹ = 61263987310943 is a prime.

It is a super-2 number, since 2×61263987311455² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61263987311393 and 61263987311402.

It is a congruent number.

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, 2536945 + ... + 11356234.

It is an arithmetic number, because the mean of its divisors is an integer number (4610194759170).

Almost surely, 2^{61263987311455} is an apocalyptic number.

61263987311455 is a deficient number, since it is larger than the sum of its proper divisors (12499128835265).

61263987311455 is a wasteful number, since it uses less digits than its factorization.

61263987311455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13896138.

The product of its digits is 32659200, while the sum is 61.

The spelling of 61263987311455 in words is "sixty-one trillion, two hundred sixty-three billion, nine hundred eighty-seven million, three hundred eleven thousand, four hundred fifty-five".