78148428601553 has 16 divisors (see below), whose sum is σ = 81217900108800. Its totient is φ = 75113331124800.

The previous prime is 78148428601541. The next prime is 78148428601561. The reversal of 78148428601553 is 35510682484187.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78148428601553 is a prime.

It is a super-2 number, since 2×78148428601553² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78148428601153) 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, 52134683 + ... + 53612703.

It is an arithmetic number, because the mean of its divisors is an integer number (5076118756800).

Almost surely, 2^{78148428601553} is an apocalyptic number.

It is an amenable number.

78148428601553 is a deficient number, since it is larger than the sum of its proper divisors (3069471507247).

78148428601553 is a wasteful number, since it uses less digits than its factorization.

78148428601553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489648.

The product of its (nonzero) digits is 51609600, while the sum is 62.

The spelling of 78148428601553 in words is "seventy-eight trillion, one hundred forty-eight billion, four hundred twenty-eight million, six hundred one thousand, five hundred fifty-three".