61774962420 has 24 divisors (see below), whose sum is σ = 172969894944. Its totient is φ = 16473323296.

The previous prime is 61774962383. The next prime is 61774962421. The reversal of 61774962420 is 2426947716.

61774962420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61774962420² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61774962420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61774962421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514791294 + ... + 514791413.

It is an arithmetic number, because the mean of its divisors is an integer number (7207078956).

Almost surely, 2^61774962420 is an apocalyptic number.

61774962420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61774962420 is an abundant number, since it is smaller than the sum of its proper divisors (111194932524).

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

61774962420 is a wasteful number, since it uses less digits than its factorization.

61774962420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029582719 (or 1029582717 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 61774962420 in words is "sixty-one billion, seven hundred seventy-four million, nine hundred sixty-two thousand, four hundred twenty".