1557955678952 has 32 divisors (see below), whose sum is σ = 2998451557800. Its totient is φ = 758621472000.

The previous prime is 1557955678897. The next prime is 1557955678997. The reversal of 1557955678952 is 2598765597551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1086610268836 + 471345410116 = 1042406^2 + 686546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1557955678952.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15755327 + ... + 15853902.

Almost surely, 2^{1557955678952} is an apocalyptic number.

It is an amenable number.

1557955678952 is a deficient number, since it is larger than the sum of its proper divisors (1440495878848).

1557955678952 is a wasteful number, since it uses less digits than its factorization.

1557955678952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31609397 (or 31609393 counting only the distinct ones).

The product of its digits is 1190700000, while the sum is 74.

The spelling of 1557955678952 in words is "one trillion, five hundred fifty-seven billion, nine hundred fifty-five million, six hundred seventy-eight thousand, nine hundred fifty-two".