77487036451 has 24 divisors (see below), whose sum is σ = 88907414400. Its totient is φ = 67404163200.

The previous prime is 77487036449. The next prime is 77487036461. The reversal of 77487036451 is 15463078477.

It is not a de Polignac number, because 77487036451 - 2¹ = 77487036449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77487036421) 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, 217785 + ... + 449893.

It is an arithmetic number, because the mean of its divisors is an integer number (3704475600).

Almost surely, 2^77487036451 is an apocalyptic number.

77487036451 is a deficient number, since it is larger than the sum of its proper divisors (11420377949).

77487036451 is a wasteful number, since it uses less digits than its factorization.

77487036451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232251 (or 232240 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 77487036451 in words is "seventy-seven billion, four hundred eighty-seven million, thirty-six thousand, four hundred fifty-one".