961269086640 has 80 divisors (see below), whose sum is σ = 3020755239648. Its totient is φ = 252826933248.

The previous prime is 961269086623. The next prime is 961269086669. The reversal of 961269086640 is 46680962169.

It is a happy number.

961269086640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27415959 + ... + 27450998.

Almost surely, 2^961269086640 is an apocalyptic number.

It is an amenable number.

961269086640 is an abundant number, since it is smaller than the sum of its proper divisors (2059486153008).

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

961269086640 is a wasteful number, since it uses less digits than its factorization.

961269086640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54867046 (or 54867040 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 961269086640 in words is "nine hundred sixty-one billion, two hundred sixty-nine million, eighty-six thousand, six hundred forty".