61728388962 has 16 divisors (see below), whose sum is σ = 123495360480. Its totient is φ = 20569699232.

The previous prime is 61728388961. The next prime is 61728388987. The reversal of 61728388962 is 26988382716.

It is a junction number, because it is equal to n+sod(n) for n = 61728388896 and 61728388905.

It is not an unprimeable number, because it can be changed into a prime (61728388961) 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, 1586787 + ... + 1625222.

It is an arithmetic number, because the mean of its divisors is an integer number (7718460030).

Almost surely, 2^61728388962 is an apocalyptic number.

61728388962 is an abundant number, since it is smaller than the sum of its proper divisors (61766971518).

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

61728388962 is a wasteful number, since it uses less digits than its factorization.

61728388962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215217.

The product of its digits is 13934592, while the sum is 60.

The spelling of 61728388962 in words is "sixty-one billion, seven hundred twenty-eight million, three hundred eighty-eight thousand, nine hundred sixty-two".