61020897361812 has 72 divisors (see below), whose sum is σ = 155779288584192. Its totient is φ = 20138286936000.

The previous prime is 61020897361771. The next prime is 61020897361813. The reversal of 61020897361812 is 21816379802016.

61020897361812 is a `hidden beast` number, since 6 + 1 + 0 + 2 + 0 + 8 + 9 + 7 + 3 + 618 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61020897361813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125676013 + ... + 126160619.

It is an arithmetic number, because the mean of its divisors is an integer number (2163601230336).

Almost surely, 2^{61020897361812} is an apocalyptic number.

It is an amenable number.

61020897361812 is an abundant number, since it is smaller than the sum of its proper divisors (94758391222380).

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

61020897361812 is a wasteful number, since it uses less digits than its factorization.

61020897361812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519349 (or 519344 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 61020897361812 in words is "sixty-one trillion, twenty billion, eight hundred ninety-seven million, three hundred sixty-one thousand, eight hundred twelve".