15552783877 has 2 divisors, whose sum is σ = 15552783878. Its totient is φ = 15552783876.

The previous prime is 15552783853. The next prime is 15552783889. The reversal of 15552783877 is 77838725551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7862546241 + 7690237636 = 88671^2 + 87694^2 .

It is a cyclic number.

It is not a de Polignac number, because 15552783877 - 2¹⁹ = 15552259589 is a prime.

It is a super-2 number, since 2×15552783877² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15552783817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7776391938 + 7776391939.

It is an arithmetic number, because the mean of its divisors is an integer number (7776391939).

Almost surely, 2^15552783877 is an apocalyptic number.

It is an amenable number.

15552783877 is a deficient number, since it is larger than the sum of its proper divisors (1).

15552783877 is an equidigital number, since it uses as much as digits as its factorization.

15552783877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16464000, while the sum is 58.

The spelling of 15552783877 in words is "fifteen billion, five hundred fifty-two million, seven hundred eighty-three thousand, eight hundred seventy-seven".