20151703061457 has 32 divisors (see below), whose sum is σ = 30939751472640. Its totient is φ = 11570355694800.

The previous prime is 20151703061453. The next prime is 20151703061467. The reversal of 20151703061457 is 75416030715102.

It is not a de Polignac number, because 20151703061457 - 2² = 20151703061453 is a prime.

It is a super-2 number, since 2×20151703061457² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20151703061453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44288719 + ... + 44741412.

It is an arithmetic number, because the mean of its divisors is an integer number (966867233520).

Almost surely, 2^{20151703061457} is an apocalyptic number.

It is an amenable number.

20151703061457 is a deficient number, since it is larger than the sum of its proper divisors (10788048411183).

20151703061457 is an equidigital number, since it uses as much as digits as its factorization.

20151703061457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89030202 (or 89030164 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

Adding to 20151703061457 its reverse (75416030715102), we get a palindrome (95567733776559).

The spelling of 20151703061457 in words is "twenty trillion, one hundred fifty-one billion, seven hundred three million, sixty-one thousand, four hundred fifty-seven".