726761620215 has 16 divisors (see below), whose sum is σ = 1292020658400. Its totient is φ = 387606197376.

The previous prime is 726761620201. The next prime is 726761620301. The reversal of 726761620215 is 512026167627.

726761620215 is a `hidden beast` number, since 7 + 2 + 6 + 7 + 6 + 1 + 620 + 2 + 15 = 666.

It is not a de Polignac number, because 726761620215 - 2¹³ = 726761612023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2691709570 + ... + 2691709839.

It is an arithmetic number, because the mean of its divisors is an integer number (80751291150).

Almost surely, 2^726761620215 is an apocalyptic number.

726761620215 is a deficient number, since it is larger than the sum of its proper divisors (565259038185).

726761620215 is a wasteful number, since it uses less digits than its factorization.

726761620215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383419423 (or 5383419417 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 726761620215 in words is "seven hundred twenty-six billion, seven hundred sixty-one million, six hundred twenty thousand, two hundred fifteen".