649126400038 has 8 divisors (see below), whose sum is σ = 977763615840. Its totient is φ = 323205194760.

The previous prime is 649126400023. The next prime is 649126400051. The reversal of 649126400038 is 830004621946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 649126399967 and 649126400003.

It is a congruent number.

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, 679002033 + ... + 679002988.

It is an arithmetic number, because the mean of its divisors is an integer number (122220451980).

Almost surely, 2^649126400038 is an apocalyptic number.

649126400038 is a deficient number, since it is larger than the sum of its proper divisors (328637215802).

649126400038 is a wasteful number, since it uses less digits than its factorization.

649126400038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358005262.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 649126400038 in words is "six hundred forty-nine billion, one hundred twenty-six million, four hundred thousand, thirty-eight".