6536436970491 has 24 divisors (see below), whose sum is σ = 9469803343104. Its totient is φ = 4344590337840.

The previous prime is 6536436970331. The next prime is 6536436970501. The reversal of 6536436970491 is 1940796346356.

6536436970491 is a `hidden beast` number, since 6 + 5 + 36 + 43 + 6 + 9 + 70 + 491 = 666.

It is not a de Polignac number, because 6536436970491 - 2¹³ = 6536436962299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6536436970891) 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, 3211450 + ... + 4835936.

It is an arithmetic number, because the mean of its divisors is an integer number (394575139296).

Almost surely, 2^{6536436970491} is an apocalyptic number.

6536436970491 is a deficient number, since it is larger than the sum of its proper divisors (2933366372613).

6536436970491 is a wasteful number, since it uses less digits than its factorization.

6536436970491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625831 (or 1625828 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 63.

The spelling of 6536436970491 in words is "six trillion, five hundred thirty-six billion, four hundred thirty-six million, nine hundred seventy thousand, four hundred ninety-one".