69881893780 has 24 divisors (see below), whose sum is σ = 148942307808. Its totient is φ = 27535551648.

The previous prime is 69881893729. The next prime is 69881893787. The reversal of 69881893780 is 8739818896.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69881893787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26073994 + ... + 26076673.

It is an arithmetic number, because the mean of its divisors is an integer number (6205929492).

Almost surely, 2^69881893780 is an apocalyptic number.

It is an amenable number.

69881893780 is an abundant number, since it is smaller than the sum of its proper divisors (79060414028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69881893780 is a wasteful number, since it uses less digits than its factorization.

69881893780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52150743 (or 52150741 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 67.

The spelling of 69881893780 in words is "sixty-nine billion, eight hundred eighty-one million, eight hundred ninety-three thousand, seven hundred eighty".