6902143557 has 16 divisors (see below), whose sum is σ = 9269311488. Its totient is φ = 4568263920.

The previous prime is 6902143537. The next prime is 6902143561. The reversal of 6902143557 is 7553412096.

It is not a de Polignac number, because 6902143557 - 2¹⁴ = 6902127173 is a prime.

It is a super-2 number, since 2×6902143557² = 95279171362873224498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6902143517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477478 + ... + 491720.

It is an arithmetic number, because the mean of its divisors is an integer number (579331968).

Almost surely, 2^6902143557 is an apocalyptic number.

It is an amenable number.

6902143557 is a deficient number, since it is larger than the sum of its proper divisors (2367167931).

6902143557 is a wasteful number, since it uses less digits than its factorization.

6902143557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15400.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 6902143557 is about 83079.1403241512. The cubic root of 6902143557 is about 1903.9753844129.

The spelling of 6902143557 in words is "six billion, nine hundred two million, one hundred forty-three thousand, five hundred fifty-seven".