61772265020505 has 64 divisors (see below), whose sum is σ = 112701316654080. Its totient is φ = 28621605728256.

The previous prime is 61772265020489. The next prime is 61772265020513. The reversal of 61772265020505 is 50502056227716.

It is not a de Polignac number, because 61772265020505 - 2⁴ = 61772265020489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 271182439 + ... + 271410131.

It is an arithmetic number, because the mean of its divisors is an integer number (1760958072720).

Almost surely, 2^{61772265020505} is an apocalyptic number.

61772265020505 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61772265020505 is a deficient number, since it is larger than the sum of its proper divisors (50929051633575).

61772265020505 is a wasteful number, since it uses less digits than its factorization.

61772265020505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309570.

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 61772265020505 in words is "sixty-one trillion, seven hundred seventy-two billion, two hundred sixty-five million, twenty thousand, five hundred five".