61418685261632 has 28 divisors (see below), whose sum is σ = 124177282885476. Its totient is φ = 30129921070080.

The previous prime is 61418685261617. The next prime is 61418685261641. The reversal of 61418685261632 is 23616258681416.

It can be written as a sum of positive squares in 2 ways, for example, as 44691043338496 + 16727641923136 = 6685136^2 + 4089944^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9053458469 + ... + 9053465252.

Almost surely, 2^{61418685261632} is an apocalyptic number.

It is an amenable number.

61418685261632 is an abundant number, since it is smaller than the sum of its proper divisors (62758597623844).

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

61418685261632 is a wasteful number, since it uses less digits than its factorization.

61418685261632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18106923786 (or 18106923776 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 59.

The spelling of 61418685261632 in words is "sixty-one trillion, four hundred eighteen billion, six hundred eighty-five million, two hundred sixty-one thousand, six hundred thirty-two".