1387902541278 has 64 divisors (see below), whose sum is σ = 3127368165120. Its totient is φ = 406923379200.

The previous prime is 1387902541243. The next prime is 1387902541283. The reversal of 1387902541278 is 8721452097831.

It is a happy number.

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, 1150443 + ... + 2024678.

It is an arithmetic number, because the mean of its divisors is an integer number (48865127580).

Almost surely, 2^{1387902541278} is an apocalyptic number.

1387902541278 is an abundant number, since it is smaller than the sum of its proper divisors (1739465623842).

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

1387902541278 is a wasteful number, since it uses less digits than its factorization.

1387902541278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175353.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 1387902541278 in words is "one trillion, three hundred eighty-seven billion, nine hundred two million, five hundred forty-one thousand, two hundred seventy-eight".