61302760785 has 48 divisors (see below), whose sum is σ = 122802376320. Its totient is φ = 27709228800.

The previous prime is 61302760723. The next prime is 61302760829. The reversal of 61302760785 is 58706720316.

61302760785 is a `hidden beast` number, since 6 + 1 + 30 + 2 + 7 + 607 + 8 + 5 = 666.

It is not a de Polignac number, because 61302760785 - 2¹² = 61302756689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61302760785.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1065291 + ... + 1121360.

It is an arithmetic number, because the mean of its divisors is an integer number (2558382840).

Almost surely, 2^61302760785 is an apocalyptic number.

It is an amenable number.

61302760785 is an abundant number, since it is smaller than the sum of its proper divisors (61499615535).

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

61302760785 is a wasteful number, since it uses less digits than its factorization.

61302760785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186758 (or 2186755 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 61302760785 in words is "sixty-one billion, three hundred two million, seven hundred sixty thousand, seven hundred eighty-five".