61442397753 has 16 divisors (see below), whose sum is σ = 91449152256. Its totient is φ = 36371820240.

The previous prime is 61442397739. The next prime is 61442397763. The reversal of 61442397753 is 35779324416.

It is not a de Polignac number, because 61442397753 - 2¹⁴ = 61442381369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61442397696 and 61442397705.

It is not an unprimeable number, because it can be changed into a prime (61442397763) 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, 21648475 + ... + 21651312.

It is an arithmetic number, because the mean of its divisors is an integer number (5715572016).

Almost surely, 2^61442397753 is an apocalyptic number.

It is an amenable number.

61442397753 is a deficient number, since it is larger than the sum of its proper divisors (30006754503).

61442397753 is a wasteful number, since it uses less digits than its factorization.

61442397753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43299844.

The product of its digits is 3810240, while the sum is 51.

The spelling of 61442397753 in words is "sixty-one billion, four hundred forty-two million, three hundred ninety-seven thousand, seven hundred fifty-three".