9961862480 has 30 divisors (see below), whose sum is σ = 23163406026. Its totient is φ = 3984387904.

The previous prime is 9961862473. The next prime is 9961862483. The reversal of 9961862480 is 842681699.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7969489984 + 1992372496 = 89272^2 + 44636^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961862483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 887141 + ... + 898299.

Almost surely, 2^9961862480 is an apocalyptic number.

It is an amenable number.

9961862480 is an abundant number, since it is smaller than the sum of its proper divisors (13201543546).

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

9961862480 is an frugal number, since it uses more digits than its factorization.

9961862480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22331 (or 11166 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 9961862480 is about 99809.1302436806. The cubic root of 9961862480 is about 2151.6923743651.

The spelling of 9961862480 in words is "nine billion, nine hundred sixty-one million, eight hundred sixty-two thousand, four hundred eighty".