201455402551534 has 4 divisors (see below), whose sum is σ = 302183103827304. Its totient is φ = 100727701275766.

The previous prime is 201455402551517. The next prime is 201455402551541. The reversal of 201455402551534 is 435155204554102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×201455402551534² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50363850637882 + ... + 50363850637885.

It is an arithmetic number, because the mean of its divisors is an integer number (75545775956826).

Almost surely, 2^{201455402551534} is an apocalyptic number.

201455402551534 is a deficient number, since it is larger than the sum of its proper divisors (100727701275770).

201455402551534 is a wasteful number, since it uses less digits than its factorization.

201455402551534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100727701275769.

The product of its (nonzero) digits is 2400000, while the sum is 46.

The spelling of 201455402551534 in words is "two hundred one trillion, four hundred fifty-five billion, four hundred two million, five hundred fifty-one thousand, five hundred thirty-four".