69487669440 has 672 divisors, whose sum is σ = 295360465920. Its totient is φ = 14637293568.

The previous prime is 69487669429. The next prime is 69487669441. The reversal of 69487669440 is 4496678496.

69487669440 is a `hidden beast` number, since 6 + 9 + 487 + 66 + 94 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (69487669441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14170029 + ... + 14174931.

Almost surely, 2^69487669440 is an apocalyptic number.

69487669440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69487669440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147680232960).

69487669440 is an abundant number, since it is smaller than the sum of its proper divisors (225872796480).

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

69487669440 is a wasteful number, since it uses less digits than its factorization.

69487669440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989 (or 4976 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 69487669440 in words is "sixty-nine billion, four hundred eighty-seven million, six hundred sixty-nine thousand, four hundred forty".