1557549952434 has 96 divisors (see below), whose sum is σ = 4062744766080. Its totient is φ = 421284519936.

The previous prime is 1557549952423. The next prime is 1557549952447. The reversal of 1557549952434 is 4342599457551.

1557549952434 is a `hidden beast` number, since 1 + 5 + 5 + 7 + 549 + 9 + 52 + 4 + 34 = 666.

It is a super-3 number, since 3×1557549952434³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3050034 + ... + 3523890.

It is an arithmetic number, because the mean of its divisors is an integer number (42320257980).

Almost surely, 2^{1557549952434} is an apocalyptic number.

1557549952434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1557549952434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031372383040).

1557549952434 is an abundant number, since it is smaller than the sum of its proper divisors (2505194813646).

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

1557549952434 is a wasteful number, since it uses less digits than its factorization.

1557549952434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475264 (or 475261 counting only the distinct ones).

The product of its digits is 136080000, while the sum is 63.

The spelling of 1557549952434 in words is "one trillion, five hundred fifty-seven billion, five hundred forty-nine million, nine hundred fifty-two thousand, four hundred thirty-four".