1247061987916 has 12 divisors (see below), whose sum is σ = 2184438904200. Its totient is φ = 622936586720.

The previous prime is 1247061987889. The next prime is 1247061987937. The reversal of 1247061987916 is 6197891607421.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148597090 + ... + 148605481.

It is an arithmetic number, because the mean of its divisors is an integer number (182036575350).

Almost surely, 2^{1247061987916} is an apocalyptic number.

It is an amenable number.

1247061987916 is a deficient number, since it is larger than the sum of its proper divisors (937376916284).

1247061987916 is a wasteful number, since it uses less digits than its factorization.

1247061987916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297203624 (or 297203622 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 61.

The spelling of 1247061987916 in words is "one trillion, two hundred forty-seven billion, sixty-one million, nine hundred eighty-seven thousand, nine hundred sixteen".