75420456383857 has 16 divisors (see below), whose sum is σ = 84760067403648. Its totient is φ = 66586753918080.

The previous prime is 75420456383821. The next prime is 75420456383869. The reversal of 75420456383857 is 75838365402457.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75420456383857 is a prime.

It is a super-2 number, since 2×75420456383857² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75420456383792 and 75420456383801.

It is not an unprimeable number, because it can be changed into a prime (75420456383057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6065644 + ... + 13697917.

It is an arithmetic number, because the mean of its divisors is an integer number (5297504212728).

Almost surely, 2^{75420456383857} is an apocalyptic number.

It is an amenable number.

75420456383857 is a deficient number, since it is larger than the sum of its proper divisors (9339611019791).

75420456383857 is a wasteful number, since it uses less digits than its factorization.

75420456383857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19776360.

The product of its (nonzero) digits is 677376000, while the sum is 67.

The spelling of 75420456383857 in words is "seventy-five trillion, four hundred twenty billion, four hundred fifty-six million, three hundred eighty-three thousand, eight hundred fifty-seven".