257000039380 has 24 divisors (see below), whose sum is σ = 616800094848. Its totient is φ = 88114299168.

The previous prime is 257000039357. The next prime is 257000039383. The reversal of 257000039380 is 83930000752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257000039383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917857144 + ... + 917857423.

It is an arithmetic number, because the mean of its divisors is an integer number (25700003952).

Almost surely, 2^257000039380 is an apocalyptic number.

257000039380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257000039380 is an abundant number, since it is smaller than the sum of its proper divisors (359800055468).

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

257000039380 is a wasteful number, since it uses less digits than its factorization.

257000039380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835714583 (or 1835714581 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 257000039380 in words is "two hundred fifty-seven billion, thirty-nine thousand, three hundred eighty".