70733754253661 has 16 divisors (see below), whose sum is σ = 71814440300400. Its totient is φ = 69659479769088.

The previous prime is 70733754253573. The next prime is 70733754253663. The reversal of 70733754253661 is 16635245733707.

It can be written as a sum of positive squares in 8 ways, for example, as 10908943631161 + 59824810622500 = 3302869^2 + 7734650^2 .

It is a cyclic number.

It is not a de Polignac number, because 70733754253661 - 2¹⁸ = 70733753991517 is a prime.

It is a super-2 number, since 2×70733754253661² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70733754253661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70733754253663) 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, 222464045 + ... + 222781773.

It is an arithmetic number, because the mean of its divisors is an integer number (4488402518775).

Almost surely, 2^{70733754253661} is an apocalyptic number.

It is an amenable number.

70733754253661 is a deficient number, since it is larger than the sum of its proper divisors (1080686046739).

70733754253661 is a wasteful number, since it uses less digits than its factorization.

70733754253661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327808.

The product of its (nonzero) digits is 66679200, while the sum is 59.

The spelling of 70733754253661 in words is "seventy trillion, seven hundred thirty-three billion, seven hundred fifty-four million, two hundred fifty-three thousand, six hundred sixty-one".