1378120510536 has 64 divisors (see below), whose sum is σ = 4295440558080. Its totient is φ = 357953378880.

The previous prime is 1378120510489. The next prime is 1378120510573. The reversal of 1378120510536 is 6350150218731.

It is a super-2 number, since 2×1378120510536² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372866256 + ... + 372869951.

It is an arithmetic number, because the mean of its divisors is an integer number (67116258720).

Almost surely, 2^{1378120510536} is an apocalyptic number.

It is an amenable number.

1378120510536 is an abundant number, since it is smaller than the sum of its proper divisors (2917320047544).

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

1378120510536 is a wasteful number, since it uses less digits than its factorization.

1378120510536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745736234 (or 745736230 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 1378120510536 in words is "one trillion, three hundred seventy-eight billion, one hundred twenty million, five hundred ten thousand, five hundred thirty-six".