63890624696949 has 18 divisors (see below), whose sum is σ = 98034403374050. Its totient is φ = 40088235102336.

The previous prime is 63890624696947. The next prime is 63890624696989. The reversal of 63890624696949 is 94969642609836.

63890624696949 is a `hidden beast` number, since 6 + 3 + 8 + 9 + 0 + 62 + 469 + 6 + 94 + 9 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 17950940291025 + 45939684405924 = 4236855^2 + 6777882^2 .

It is not a de Polignac number, because 63890624696949 - 2¹ = 63890624696947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63890624696947) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12281932174 + ... + 12281937375.

Almost surely, 2^{63890624696949} is an apocalyptic number.

It is an amenable number.

63890624696949 is a deficient number, since it is larger than the sum of its proper divisors (34143778677101).

63890624696949 is a wasteful number, since it uses less digits than its factorization.

63890624696949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24563869589 (or 24563869569 counting only the distinct ones).

The product of its (nonzero) digits is 6530347008, while the sum is 81.

The spelling of 63890624696949 in words is "sixty-three trillion, eight hundred ninety billion, six hundred twenty-four million, six hundred ninety-six thousand, nine hundred forty-nine".