78196490240 has 240 divisors, whose sum is σ = 206894507904. Its totient is φ = 28134604800.

The previous prime is 78196490233. The next prime is 78196490249. The reversal of 78196490240 is 4209469187.

It is a super-2 number, since 2×78196490240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78196490249) 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, 96419435 + ... + 96420245.

Almost surely, 2^78196490240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78196490240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103447253952).

78196490240 is an abundant number, since it is smaller than the sum of its proper divisors (128698017664).

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

78196490240 is a wasteful number, since it uses less digits than its factorization.

78196490240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 78196490240 in words is "seventy-eight billion, one hundred ninety-six million, four hundred ninety thousand, two hundred forty".