78143151489720 has 128 divisors (see below), whose sum is σ = 253057282444800. Its totient is φ = 19244850082304.

The previous prime is 78143151489707. The next prime is 78143151489803. The reversal of 78143151489720 is 2798415134187.

It is a super-2 number, since 2×78143151489720² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488070582 + ... + 488230661.

It is an arithmetic number, because the mean of its divisors is an integer number (1977010019100).

Almost surely, 2^{78143151489720} is an apocalyptic number.

It is an amenable number.

78143151489720 is an abundant number, since it is smaller than the sum of its proper divisors (174914130955080).

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

78143151489720 is a wasteful number, since it uses less digits than its factorization.

78143151489720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976301309 (or 976301305 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 78143151489720 in words is "seventy-eight trillion, one hundred forty-three billion, one hundred fifty-one million, four hundred eighty-nine thousand, seven hundred twenty".