2057621712542 has 32 divisors (see below), whose sum is σ = 3568327745760. Its totient is φ = 879463367680.

The previous prime is 2057621712539. The next prime is 2057621712557. The reversal of 2057621712542 is 2452171267502.

It is a super-2 number, since 2×2057621712542² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2057621712493 and 2057621712502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2097317 + ... + 2917872.

It is an arithmetic number, because the mean of its divisors is an integer number (111510242055).

Almost surely, 2^{2057621712542} is an apocalyptic number.

2057621712542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2057621712542 is a deficient number, since it is larger than the sum of its proper divisors (1510706033218).

2057621712542 is a wasteful number, since it uses less digits than its factorization.

2057621712542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016316.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 2057621712542 in words is "two trillion, fifty-seven billion, six hundred twenty-one million, seven hundred twelve thousand, five hundred forty-two".