1397106028278 has 32 divisors (see below), whose sum is σ = 3105384760800. Its totient is φ = 465596304768.

The previous prime is 1397106028261. The next prime is 1397106028301. The reversal of 1397106028278 is 8728206017931.

It is a happy number.

1397106028278 is a `hidden beast` number, since 1 + 3 + 9 + 7 + 1 + 0 + 602 + 8 + 27 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 2695951 + ... + 3172122.

It is an arithmetic number, because the mean of its divisors is an integer number (97043273775).

Almost surely, 2^{1397106028278} is an apocalyptic number.

1397106028278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1397106028278 is an abundant number, since it is smaller than the sum of its proper divisors (1708278732522).

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

1397106028278 is a wasteful number, since it uses less digits than its factorization.

1397106028278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872493 (or 5872487 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 1397106028278 in words is "one trillion, three hundred ninety-seven billion, one hundred six million, twenty-eight thousand, two hundred seventy-eight".