87949537245 has 12 divisors (see below), whose sum is σ = 152445864636. Its totient is φ = 46906419840.

The previous prime is 87949537241. The next prime is 87949537253. The reversal of 87949537245 is 54273594978.

87949537245 is a `hidden beast` number, since 8 + 7 + 94 + 9 + 537 + 2 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67986390564 + 19963146681 = 260742^2 + 141291^2 .

It is not a de Polignac number, because 87949537245 - 2² = 87949537241 is a prime.

It is a super-2 number, since 2×87949537245² (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 (87949537241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 977217036 + ... + 977217125.

It is an arithmetic number, because the mean of its divisors is an integer number (12703822053).

Almost surely, 2^87949537245 is an apocalyptic number.

It is an amenable number.

87949537245 is a deficient number, since it is larger than the sum of its proper divisors (64496327391).

87949537245 is a wasteful number, since it uses less digits than its factorization.

87949537245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954434172 (or 1954434169 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 87949537245 in words is "eighty-seven billion, nine hundred forty-nine million, five hundred thirty-seven thousand, two hundred forty-five".