711551981949 has 16 divisors (see below), whose sum is σ = 972035683584. Its totient is φ = 462721939200.

The previous prime is 711551981857. The next prime is 711551981957. The reversal of 711551981949 is 949189155117.

It is a de Polignac number, because none of the positive numbers 2^k-711551981949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 711551981892 and 711551981901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711551981969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280332 + ... + 1225434.

It is an arithmetic number, because the mean of its divisors is an integer number (60752230224).

Almost surely, 2^711551981949 is an apocalyptic number.

It is an amenable number.

711551981949 is a deficient number, since it is larger than the sum of its proper divisors (260483701635).

711551981949 is a wasteful number, since it uses less digits than its factorization.

711551981949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951268.

The product of its digits is 4082400, while the sum is 60.

The spelling of 711551981949 in words is "seven hundred eleven billion, five hundred fifty-one million, nine hundred eighty-one thousand, nine hundred forty-nine".