84963155781 has 32 divisors (see below), whose sum is σ = 137284512768. Its totient is φ = 45627436800.

The previous prime is 84963155777. The next prime is 84963155807. The reversal of 84963155781 is 18755136948.

It is not a de Polignac number, because 84963155781 - 2² = 84963155777 is a prime.

It is a super-2 number, since 2×84963155781² (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 (84963159781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69606 + ... + 418056.

It is an arithmetic number, because the mean of its divisors is an integer number (4290141024).

Almost surely, 2^84963155781 is an apocalyptic number.

It is an amenable number.

84963155781 is a deficient number, since it is larger than the sum of its proper divisors (52321356987).

84963155781 is a wasteful number, since it uses less digits than its factorization.

84963155781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349161.

The product of its digits is 7257600, while the sum is 57.

The spelling of 84963155781 in words is "eighty-four billion, nine hundred sixty-three million, one hundred fifty-five thousand, seven hundred eighty-one".