78408001347542 has 16 divisors (see below), whose sum is σ = 121751439282000. Its totient is φ = 37826051608800.

The previous prime is 78408001347521. The next prime is 78408001347553. The reversal of 78408001347542 is 24574310080487.

It is a happy number.

78408001347542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78408001347542² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465753917 + ... + 465922232.

It is an arithmetic number, because the mean of its divisors is an integer number (7609464955125).

Almost surely, 2^{78408001347542} is an apocalyptic number.

78408001347542 is a deficient number, since it is larger than the sum of its proper divisors (43343437934458).

78408001347542 is a wasteful number, since it uses less digits than its factorization.

78408001347542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931677631.

The product of its (nonzero) digits is 6021120, while the sum is 53.

The spelling of 78408001347542 in words is "seventy-eight trillion, four hundred eight billion, one million, three hundred forty-seven thousand, five hundred forty-two".