1023511851377 has 2 divisors, whose sum is σ = 1023511851378. Its totient is φ = 1023511851376.

The previous prime is 1023511851359. The next prime is 1023511851379. The reversal of 1023511851377 is 7731581153201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 637385076496 + 386126774881 = 798364^2 + 621391^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023511851377 - 2²⁶ = 1023444742513 is a prime.

It is a super-2 number, since 2×1023511851377² (a number of 25 digits) contains 22 as substring.

Together with 1023511851379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1023511851379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511755925688 + 511755925689.

It is an arithmetic number, because the mean of its divisors is an integer number (511755925689).

Almost surely, 2^{1023511851377} is an apocalyptic number.

It is an amenable number.

1023511851377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023511851377 is an equidigital number, since it uses as much as digits as its factorization.

1023511851377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 1023511851377 in words is "one trillion, twenty-three billion, five hundred eleven million, eight hundred fifty-one thousand, three hundred seventy-seven".