400155515107 has 2 divisors, whose sum is σ = 400155515108. Its totient is φ = 400155515106.

The previous prime is 400155515047. The next prime is 400155515119. The reversal of 400155515107 is 701515551004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400155515107 - 2¹⁹ = 400154990819 is a prime.

It is not a weakly prime, because it can be changed into another prime (400155515147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200077757553 + 200077757554.

It is an arithmetic number, because the mean of its divisors is an integer number (200077757554).

Almost surely, 2^400155515107 is an apocalyptic number.

400155515107 is a deficient number, since it is larger than the sum of its proper divisors (1).

400155515107 is an equidigital number, since it uses as much as digits as its factorization.

400155515107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 34.

The spelling of 400155515107 in words is "four hundred billion, one hundred fifty-five million, five hundred fifteen thousand, one hundred seven".