60891987407 has 2 divisors, whose sum is σ = 60891987408. Its totient is φ = 60891987406.

The previous prime is 60891987391. The next prime is 60891987427. The reversal of 60891987407 is 70478919806.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 60891987407 - 2⁴ = 60891987391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60891987427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30445993703 + 30445993704.

It is an arithmetic number, because the mean of its divisors is an integer number (30445993704).

Almost surely, 2^60891987407 is an apocalyptic number.

60891987407 is a deficient number, since it is larger than the sum of its proper divisors (1).

60891987407 is an equidigital number, since it uses as much as digits as its factorization.

60891987407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 60891987407 in words is "sixty billion, eight hundred ninety-one million, nine hundred eighty-seven thousand, four hundred seven".