2507830073981 has 2 divisors, whose sum is σ = 2507830073982. Its totient is φ = 2507830073980.

The previous prime is 2507830073953. The next prime is 2507830074041. The reversal of 2507830073981 is 1893700387052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2180743306756 + 327086767225 = 1476734^2 + 571915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2507830073981 is a prime.

It is a super-2 number, since 2×2507830073981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2507830070981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253915036990 + 1253915036991.

It is an arithmetic number, because the mean of its divisors is an integer number (1253915036991).

Almost surely, 2^{2507830073981} is an apocalyptic number.

It is an amenable number.

2507830073981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2507830073981 is an equidigital number, since it uses as much as digits as its factorization.

2507830073981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 2507830073981 in words is "two trillion, five hundred seven billion, eight hundred thirty million, seventy-three thousand, nine hundred eighty-one".