101399238877 has 2 divisors, whose sum is σ = 101399238878. Its totient is φ = 101399238876.

The previous prime is 101399238799. The next prime is 101399238881. The reversal of 101399238877 is 778832993101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66492295321 + 34906943556 = 257861^2 + 186834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101399238877 is a prime.

It is a super-2 number, since 2×101399238877² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101399238077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50699619438 + 50699619439.

It is an arithmetic number, because the mean of its divisors is an integer number (50699619439).

Almost surely, 2^101399238877 is an apocalyptic number.

It is an amenable number.

101399238877 is a deficient number, since it is larger than the sum of its proper divisors (1).

101399238877 is an equidigital number, since it uses as much as digits as its factorization.

101399238877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 101399238877 in words is "one hundred one billion, three hundred ninety-nine million, two hundred thirty-eight thousand, eight hundred seventy-seven".