78670901340 has 144 divisors (see below), whose sum is σ = 244401856608. Its totient is φ = 20477878272.

The previous prime is 78670901321. The next prime is 78670901357. The reversal of 78670901340 is 4310907687.

It is a super-2 number, since 2×78670901340² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1243719 + ... + 1305441.

Almost surely, 2^78670901340 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 78670901340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122200928304).

78670901340 is an abundant number, since it is smaller than the sum of its proper divisors (165730955268).

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

78670901340 is a wasteful number, since it uses less digits than its factorization.

78670901340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61908 (or 61903 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 78670901340 in words is "seventy-eight billion, six hundred seventy million, nine hundred one thousand, three hundred forty".