61153215077466 has 32 divisors (see below), whose sum is σ = 135972251349120. Its totient is φ = 20372972349312.

The previous prime is 61153215077443. The next prime is 61153215077467. The reversal of 61153215077466 is 66477051235116.

61153215077466 is a `hidden beast` number, since 6 + 1 + 1 + 5 + 3 + 2 + 1 + 507 + 74 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (61153215077467) 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, 317477175 + ... + 317669738.

It is an arithmetic number, because the mean of its divisors is an integer number (4249132854660).

Almost surely, 2^{61153215077466} is an apocalyptic number.

61153215077466 is an abundant number, since it is smaller than the sum of its proper divisors (74819036271654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61153215077466 is a wasteful number, since it uses less digits than its factorization.

61153215077466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635148707 (or 635148701 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 61153215077466 in words is "sixty-one trillion, one hundred fifty-three billion, two hundred fifteen million, seventy-seven thousand, four hundred sixty-six".