2057655381639 has 72 divisors (see below), whose sum is σ = 3311332307712. Its totient is φ = 1126636879680.

The previous prime is 2057655381631. The next prime is 2057655381647. The reversal of 2057655381639 is 9361835567502.

It is an interprime number because it is at equal distance from previous prime (2057655381631) and next prime (2057655381647).

It is not a de Polignac number, because 2057655381639 - 2³ = 2057655381631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057655381631) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12236082 + ... + 12403104.

It is an arithmetic number, because the mean of its divisors is an integer number (45990726496).

Almost surely, 2^{2057655381639} is an apocalyptic number.

2057655381639 is a deficient number, since it is larger than the sum of its proper divisors (1253676926073).

2057655381639 is a wasteful number, since it uses less digits than its factorization.

2057655381639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167157 (or 167097 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 60.

The spelling of 2057655381639 in words is "two trillion, fifty-seven billion, six hundred fifty-five million, three hundred eighty-one thousand, six hundred thirty-nine".