1398008122757 has 16 divisors (see below), whose sum is σ = 1461604176000. Its totient is φ = 1334648815104.

The previous prime is 1398008122747. The next prime is 1398008122831. The reversal of 1398008122757 is 7572218008931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398008122757 is a prime.

It is a super-2 number, since 2×1398008122757² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1398008122699 and 1398008122708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398008122747) 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, 27680594 + ... + 27731052.

It is an arithmetic number, because the mean of its divisors is an integer number (91350261000).

Almost surely, 2^{1398008122757} is an apocalyptic number.

It is an amenable number.

1398008122757 is a deficient number, since it is larger than the sum of its proper divisors (63596053243).

1398008122757 is a wasteful number, since it uses less digits than its factorization.

1398008122757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52780.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 1398008122757 in words is "one trillion, three hundred ninety-eight billion, eight million, one hundred twenty-two thousand, seven hundred fifty-seven".