2520742613766 has 128 divisors (see below), whose sum is σ = 5559552249216. Its totient is φ = 757205729280.

The previous prime is 2520742613759. The next prime is 2520742613789. The reversal of 2520742613766 is 6673162470252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1192967526 + ... + 1192969638.

It is an arithmetic number, because the mean of its divisors is an integer number (43434001947).

Almost surely, 2^{2520742613766} is an apocalyptic number.

2520742613766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2520742613766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2779776124608).

2520742613766 is an abundant number, since it is smaller than the sum of its proper divisors (3038809635450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2520742613766 is a wasteful number, since it uses less digits than its factorization.

2520742613766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 2520742613766 in words is "two trillion, five hundred twenty billion, seven hundred forty-two million, six hundred thirteen thousand, seven hundred sixty-six".