78146135401045 has 32 divisors (see below), whose sum is σ = 99211603968000. Its totient is φ = 58970089848384.

The previous prime is 78146135401027. The next prime is 78146135401073. The reversal of 78146135401045 is 54010453164187.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78146135401045 is a prime.

It is a super-2 number, since 2×78146135401045² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78146135401045.

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, 2251156 + ... + 12702754.

It is an arithmetic number, because the mean of its divisors is an integer number (3100362624000).

Almost surely, 2^{78146135401045} is an apocalyptic number.

It is an amenable number.

78146135401045 is a deficient number, since it is larger than the sum of its proper divisors (21065468566955).

78146135401045 is a wasteful number, since it uses less digits than its factorization.

78146135401045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10452529.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 78146135401045 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred thirty-five million, four hundred one thousand, forty-five".