212981503077 has 24 divisors (see below), whose sum is σ = 362930081280. Its totient is φ = 117777788640.

The previous prime is 212981503037. The next prime is 212981503081. The reversal of 212981503077 is 770305189212.

212981503077 is a `hidden beast` number, since 2 + 1 + 298 + 1 + 50 + 307 + 7 = 666.

It is not a de Polignac number, because 212981503077 - 2⁷ = 212981502949 is a prime.

It is a super-2 number, since 2×212981503077² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212981503037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54524802 + ... + 54528707.

It is an arithmetic number, because the mean of its divisors is an integer number (15122086720).

Almost surely, 2^212981503077 is an apocalyptic number.

It is an amenable number.

212981503077 is a deficient number, since it is larger than the sum of its proper divisors (149948578203).

212981503077 is a wasteful number, since it uses less digits than its factorization.

212981503077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109053553 (or 109053550 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 212981503077 in words is "two hundred twelve billion, nine hundred eighty-one million, five hundred three thousand, seventy-seven".