213142099977 has 16 divisors (see below), whose sum is σ = 315844764160. Its totient is φ = 142059322800.

The previous prime is 213142099967. The next prime is 213142099987. The reversal of 213142099977 is 779990241312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213142099967) and next prime (213142099987).

It is not a de Polignac number, because 213142099977 - 2¹⁵ = 213142067209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213142099927) 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, 873049 + ... + 1090182.

It is an arithmetic number, because the mean of its divisors is an integer number (19740297760).

Almost surely, 2^213142099977 is an apocalyptic number.

213142099977 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

213142099977 is a deficient number, since it is larger than the sum of its proper divisors (102702664183).

213142099977 is a wasteful number, since it uses less digits than its factorization.

213142099977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967261 (or 1967255 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 213142099977 in words is "two hundred thirteen billion, one hundred forty-two million, ninety-nine thousand, nine hundred seventy-seven".